Finding the Fourth Proportional to 520,069.10, 717,774.09 and 305,305.70
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Solution
The fourth proportional to 520,069.10, 717,774.09 and 305,305.70 is: 421,368.09
Step by Step Solution
- Step 1: Write the proportion equation
520,069.10 : 717,774.09 = 305,305.70 : x - Step 2: Convert to fraction form
520,069.10/717,774.09 = 305,305.70/x - Step 3: Cross multiply
520,069.10x = 717,774.09 × 305,305.70 - Step 4: Simplify right side
520,069.10x = 219,140,520,989.31 - Step 5: Solve for x
x = 219,140,520,989.31/520,069.10 - Step 6: Final answer
x = 421,368.09
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.